ABS removal

Gostek

No I get it was asked hundreds times but since Photobucket fucked up loads of info is lost.When taking abs pump off I suppose to swap proportion valve for non abs (single piston) one. I highly doubt that I'll find one so I'm wondering what happen if I'll leave twin piston one?Another idea I've had, since most of braking force goes on front brakes can I just bypass proportion valve for front brakes and just fit t piece.Or could I put small adjustable bias valve for rears?Last one how are brake circuit split on Pulsar is it one for front one rear or is diagonally?